97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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Cubesat Space Protocol - A small network-layer protocol designed for Cubesats
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Copyright (C) 2012 Gomspace ApS (http://www.gomspace.com)
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Copyright (C) 2012 AAUSAT3 Project (http://aausat3.space.aau.dk)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdint.h>
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/* FreeRTOS includes */
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#include <FreeRTOS.h>
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#include <semphr.h>
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/* CSP includes */
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#include <csp/csp.h>
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#include <csp/arch/csp_malloc.h>
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#include <csp/arch/csp_semaphore.h>
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#include <csp/arch/csp_queue.h>
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int csp_mutex_create(csp_mutex_t * mutex) {
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*mutex = xSemaphoreCreateMutex();
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if (*mutex) {
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return CSP_SEMAPHORE_OK;
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} else {
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return CSP_SEMAPHORE_ERROR;
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}
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}
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int csp_mutex_remove(csp_mutex_t * mutex) {
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return csp_bin_sem_remove(mutex);
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}
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int csp_mutex_lock(csp_mutex_t * mutex, uint32_t timeout) {
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return csp_bin_sem_wait(mutex, timeout);
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}
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int csp_mutex_unlock(csp_mutex_t * mutex) {
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return csp_bin_sem_post(mutex);
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}
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int csp_bin_sem_create(csp_bin_sem_handle_t * sem) {
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vSemaphoreCreateBinary(*sem);
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return CSP_SEMAPHORE_OK;
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}
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int csp_bin_sem_remove(csp_bin_sem_handle_t * sem) {
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if ((sem != NULL) && (*sem != NULL)) {
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csp_queue_remove(*sem);
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}
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return CSP_SEMAPHORE_OK;
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}
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int csp_bin_sem_wait(csp_bin_sem_handle_t * sem, uint32_t timeout) {
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csp_log_lock("Wait: %p", sem);
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if (timeout != CSP_MAX_DELAY)
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timeout = timeout / portTICK_RATE_MS;
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if (xSemaphoreTake(*sem, timeout) == pdPASS) {
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return CSP_SEMAPHORE_OK;
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} else {
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return CSP_SEMAPHORE_ERROR;
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}
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}
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int csp_bin_sem_post(csp_bin_sem_handle_t * sem) {
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csp_log_lock("Post: %p", sem);
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if (xSemaphoreGive(*sem) == pdPASS) {
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return CSP_SEMAPHORE_OK;
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} else {
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return CSP_SEMAPHORE_ERROR;
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}
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}
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int csp_bin_sem_post_isr(csp_bin_sem_handle_t * sem, CSP_BASE_TYPE * task_woken) {
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csp_log_lock("Post: %p", sem);
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if (xSemaphoreGiveFromISR(*sem, task_woken) == pdPASS) {
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return CSP_SEMAPHORE_OK;
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} else {
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return CSP_SEMAPHORE_ERROR;
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}
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}
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